The difficulty encountered by many species in reaching and colonizing an isolated geographic location is known as which of the following?

A) Distance effect
B) Edge effect
C) Diversity index
D) Complexity index
E) Opportunity index

Distance Effect

A phenomenon in psychology where the distance between stimuli affects response time; in cognitive tasks, greater distances usually lead to faster responses.

Geographic Location

A specific place or position within a physical space that is identified using coordinates or a descriptive address.

Edge Effect

The ecological phenomenon in which ecotones between adjacent communities often contain a greater number of species or greater population densities of certain species than either adjacent community.